current bounds on the number of colors: 0 -- 113 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:28:05 2012 Optimize a model with 19881 rows, 6681 columns and 65632 nonzeros Presolve time: 0.12s Presolved: 19881 rows, 6681 columns, 65632 nonzeros Variable types: 0 continuous, 6681 integer (6681 binary) Root relaxation: objective 0.000000e+00, 354 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (557 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 56 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:28:06 2012 Optimize a model with 9997 rows, 3517 columns and 32816 nonzeros Presolve time: 0.05s Presolved: 9997 rows, 3517 columns, 32816 nonzeros Variable types: 0 continuous, 3517 integer (3517 binary) Root relaxation: objective 0.000000e+00, 299 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (528 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 28 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:28:06 2012 Optimize a model with 5055 rows, 1935 columns and 16408 nonzeros Presolve time: 0.02s Presolved: 5055 rows, 1935 columns, 16408 nonzeros Variable types: 0 continuous, 1935 integer (1935 binary) Root relaxation: objective 0.000000e+00, 231 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (414 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 14 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:28:06 2012 Optimize a model with 2584 rows, 1144 columns and 8204 nonzeros Presolve time: 0.01s Presolved: 2584 rows, 1144 columns, 8204 nonzeros Variable types: 0 continuous, 1144 integer (1144 binary) Root relaxation: objective 0.000000e+00, 245 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (417 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 7 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:28:06 2012 Optimize a model with 1172 rows, 692 columns and 3516 nonzeros Presolve time: 0.00s Presolved: 1172 rows, 692 columns, 3516 nonzeros Variable types: 0 continuous, 692 integer (692 binary) Root relaxation: objective 0.000000e+00, 267 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 206 - 0.00000 - - 0s 0 0 0.00000 0 210 - 0.00000 - - 0s 0 0 0.00000 0 216 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 290 - 0.00000 - - 0s 0 0 0.00000 0 283 - 0.00000 - - 0s 0 0 0.00000 0 283 - 0.00000 - - 0s 0 0 0.00000 0 283 - 0.00000 - - 0s 0 2 0.00000 0 265 - 0.00000 - - 0s Cutting planes: Zero half: 14 Explored 3 nodes (8212 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 3 -- 7 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:28:07 2012 Optimize a model with 1878 rows, 918 columns and 5860 nonzeros Presolve time: 0.01s Presolved: 1878 rows, 918 columns, 5860 nonzeros Variable types: 0 continuous, 918 integer (918 binary) Root relaxation: objective 0.000000e+00, 275 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (827 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:28:07 2012 Optimize a model with 1525 rows, 805 columns and 4688 nonzeros Presolve time: 0.00s Presolved: 1525 rows, 805 columns, 4688 nonzeros Variable types: 0 continuous, 805 integer (805 binary) Root relaxation: objective 0.000000e+00, 271 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 58 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1418 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% optimal solution found: number of colors: 4